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Jeffrey R. Dahn

Jeffrey R. Dahn, Upper Tantallon CA

Patent application numberDescriptionPublished
20090111022ELECTRODE COMPOSITIONS AND METHODS - Provided is an electrode composition comprising an active material that includes cobalt, tin, and carbon along with methods of making and using the same. Also provided are electrodes that include the provided electrode compositions, electrochemical cells that include the provided electrodes, and battery packs that include at least one of the provided electrochemical cells. In some embodiments, the composition also includes iron.04-30-2009
20090286162REDOX SHUTTLES FOR HIGH VOLTAGE CATHODES - Overcharge protection is provided for rechargeable electrochemical lithium-ion cells. The electrolyte in the provided cells contains a cyclable redox shuttle molecule that can operate in cells with high voltage cathode materials.11-19-2009
20100050583AMMONIA-FREE GASEOUS AIR FILTER - A filter for removing contaminants from air. The filter includes (a) a substrate that does not have any volatile ammonia on the surface thereof; (b) copper that has been impregnated onto the substrate; and (c) molybdenum and/or tungsten that has been impregnated onto the substrate. The filter can be made using an aqueous solution(s) that contains one or more of a first copper salt and a second salt that include a polynuclear anion that contains molybdenum, tungsten, or both. Because the metals can be impregnated onto the substrate surface without using an ammonium-based solution, the need to manage ammonia off-gassing is avoided. Further, no volatile ammonia would be present on the resulting substrate surface.03-04-2010
20110049418CATHODE COMPOSITIONS FOR LITHIUM-ION ELECTROCHEMICAL CELLS - Compositions useful for cathodes in lithium-ion batteries are described. In some examples, an electrochemical cell includes an electrode, the electrode comprising a composition including the elements of Li, Fe, and F, where the composition includes a first phase including a disordered trirutile structure. Cathodes including such a composition may exhibit reversible reactivity with lithium. In some examples, this reaction takes place via an intercalation mechanism.03-03-2011

Patent applications by Jeffrey R. Dahn, Upper Tantallon CA

Jeffrey R. Dahn, Nova Scotia CA

Patent application numberDescriptionPublished
20100330428METHOD OF MAKING TIN-BASED ALLOYS FOR NEGATIVE ELECTRODE COMPOSITIONS - Powder milling techniques, tin-based alloys formed thereby, and the use of such alloys as electrode compositions for lithium ion batteries are provided. The alloys include tin and at least one transition metal but contain no silicon. The powder milling is done using low energy roller milling (pebble milling).12-30-2010

Jeffrey R. Dahn, Halifax CA

Patent application numberDescriptionPublished
20090297948METAL OXIDE NEGATIVE ELECTRODES FOR LITHIUM-ION ELECTROCHEMICAL CELLS AND BATTERIES - Provided are negative electrode compositions for lithium-ion electrochemical cells that include metal oxides and polymeric binders. Also provided are electrochemical cells and battery packs that include electrodes made with these compositions.12-03-2009
20100104950FLUORINATED COMPOUNDS FOR USE IN LITHIUM BATTERY ELECTROLYTES - Provide are fluorinated cyclic and acyclic carbonate solvent compositions such as various fluorine substituted 1,3-dioxolane-2-one compounds and fluorine substituted 1,3-dioxane-2-one compounds, which are useful as electrolyte solvents for lithium ion batteries.04-29-2010

Patent applications by Jeffrey R. Dahn, Halifax CA

Jeffrey R. Dahn, Hubley CA

Patent application numberDescriptionPublished
20090230349METHOD OF PRODUCING LITHIUM ION CATHODE MATERIALS - A method of producing Li09-17-2009

Patent applications by Jeffrey R. Dahn, Hubley CA